{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:26.057313", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2017-Nov-22_to_2017-Nov-27_41.0_44.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2017110000827}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "November 22 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 27 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 109172.55850085898}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Georgia", "Russian Federation", "Turkiye"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "W.C.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Black Sea"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 44.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 41.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 44.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 43.5], [38.47, 44.03], [39.0, 44.25], [39.25, 44.15], [39.5, 44.25], [40.03, 44.03], [40.18, 43.68], [40.53, 43.53], [40.68, 43.18], [41.03, 43.03], [41.18, 42.68], [41.25, 42.65], [41.5, 42.75], [42.03, 42.53], [42.25, 42.0], [42.15, 41.75], [42.25, 41.5], [42.03, 40.97], [41.68, 40.82], [41.53, 40.47], [41.0, 40.25], [40.75, 40.35], [40.5, 40.25], [39.97, 40.47], [39.82, 40.82], [39.75, 40.85], [39.5, 40.75], [38.97, 40.97], [38.75, 41.5], [38.97, 42.03], [39.5, 42.25], [38.97, 42.47], [38.82, 42.82], [38.47, 42.97], [38.25, 43.5]], [[39.75, 42.15], [39.82, 42.18], [39.85, 42.25], [39.82, 42.32], [39.75, 42.35], [39.5, 42.25], [39.75, 42.15]]]]}, "2017-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 43.5], [38.47, 44.03], [38.82, 44.18], [38.97, 44.53], [39.32, 44.68], [39.47, 45.03], [40.0, 45.25], [40.25, 45.15], [40.5, 45.25], [41.03, 45.03], [41.18, 44.68], [41.53, 44.53], [41.68, 44.18], [41.75, 44.15], [42.0, 44.25], [42.25, 44.15], [42.5, 44.25], [43.03, 44.03], [43.18, 43.68], [43.53, 43.53], [43.68, 43.18], [43.75, 43.15], [44.0, 43.25], [44.53, 43.03], [44.75, 42.5], [44.53, 41.97], [44.13, 41.8], [44.25, 41.5], [44.03, 40.97], [43.68, 40.82], [43.53, 40.47], [43.0, 40.25], [42.47, 40.47], [42.32, 40.82], [42.25, 40.85], [42.18, 40.82], [42.03, 40.47], [41.5, 40.25], [41.25, 40.35], [41.0, 40.25], [40.75, 40.35], [40.5, 40.25], [39.97, 40.47], [39.82, 40.82], [39.75, 40.85], [39.5, 40.75], [38.97, 40.97], [38.75, 41.5], [38.97, 42.03], [39.5, 42.25], [38.97, 42.47], [38.82, 42.82], [38.47, 42.97], [38.25, 43.5]], [[39.75, 42.15], [39.82, 42.18], [39.85, 42.25], [39.82, 42.32], [39.75, 42.35], [39.5, 42.25], [39.75, 42.15]]]]}, "2017-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.25, 43.5], [38.47, 44.03], [38.82, 44.18], [38.97, 44.53], [39.32, 44.68], [39.47, 45.03], [40.0, 45.25], [40.25, 45.15], [40.5, 45.25], [40.75, 45.15], [41.0, 45.25], [41.53, 45.03], [41.75, 44.5], [41.65, 44.25], [41.68, 44.18], [41.75, 44.15], [42.0, 44.25], [42.25, 44.15], [42.5, 44.25], [43.03, 44.03], [43.18, 43.68], [43.53, 43.53], [43.68, 43.18], [43.75, 43.15], [44.0, 43.25], [44.53, 43.03], [44.75, 42.5], [44.54, 42.0], [44.75, 41.5], [44.53, 40.97], [44.0, 40.75], [43.75, 40.85], [43.68, 40.82], [43.53, 40.47], [43.0, 40.25], [42.75, 40.35], [42.5, 40.25], [42.0, 40.46], [41.5, 40.25], [41.25, 40.35], [41.0, 40.25], [40.75, 40.35], [40.5, 40.25], [39.97, 40.47], [39.82, 40.82], [39.75, 40.85], [39.5, 40.75], [38.97, 40.97], [38.75, 41.5], [38.97, 42.03], [39.5, 42.25], [38.97, 42.47], [38.82, 42.82], [38.47, 42.97], [38.25, 43.5]], [[39.75, 42.15], [39.82, 42.18], [39.85, 42.25], [39.82, 42.32], [39.75, 42.35], [39.5, 42.25], [39.75, 42.15]]]]}, "2017-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[38.75, 44.0], [38.97, 44.53], [39.32, 44.68], [39.47, 45.03], [40.0, 45.25], [40.25, 45.15], [40.5, 45.25], [40.75, 45.15], [41.0, 45.25], [41.53, 45.03], [41.75, 44.5], [41.65, 44.25], [41.68, 44.18], [41.75, 44.15], [42.0, 44.25], [42.25, 44.15], [42.5, 44.25], [43.03, 44.03], [43.18, 43.68], [43.53, 43.53], [43.68, 43.18], [43.75, 43.15], [44.0, 43.25], [44.53, 43.03], [44.75, 42.5], [44.54, 42.0], [44.75, 41.5], [44.53, 40.97], [44.0, 40.75], [43.75, 40.85], [43.68, 40.82], [43.53, 40.47], [43.0, 40.25], [42.75, 40.35], [42.5, 40.25], [42.0, 40.46], [41.5, 40.25], [41.25, 40.35], [41.0, 40.25], [40.47, 40.47], [40.25, 41.0], [40.47, 41.53], [40.88, 41.7], [40.75, 42.0], [40.85, 42.25], [40.82, 42.32], [40.75, 42.35], [40.5, 42.25], [39.97, 42.47], [39.82, 42.82], [39.47, 42.97], [39.32, 43.32], [38.97, 43.47], [38.75, 44.0]]]]}, "2017-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 44.0], [39.47, 44.53], [39.82, 44.68], [39.97, 45.03], [40.5, 45.25], [40.75, 45.15], [41.0, 45.25], [41.53, 45.03], [41.75, 44.5], [41.65, 44.25], [41.7, 44.13], [42.0, 44.25], [42.25, 44.15], [42.5, 44.25], [43.03, 44.03], [43.25, 43.5], [43.15, 43.25], [43.18, 43.18], [43.25, 43.15], [43.5, 43.25], [44.03, 43.03], [44.25, 42.5], [44.13, 42.2], [44.53, 42.03], [44.75, 41.5], [44.53, 40.97], [44.0, 40.75], [43.75, 40.85], [43.68, 40.82], [43.53, 40.47], [43.0, 40.25], [42.75, 40.35], [42.5, 40.25], [42.0, 40.46], [41.5, 40.25], [41.25, 40.35], [41.0, 40.25], [40.47, 40.47], [40.25, 41.0], [40.47, 41.53], [41.0, 41.75], [41.25, 41.65], [41.32, 41.68], [41.47, 42.03], [41.88, 42.2], [41.8, 42.38], [41.5, 42.25], [40.97, 42.47], [40.8, 42.88], [40.5, 42.75], [39.97, 42.97], [39.82, 43.32], [39.47, 43.47], [39.25, 44.0]]]]}, "2017-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 43.47], [39.75, 44.0], [39.97, 44.53], [40.5, 44.75], [40.75, 44.65], [41.0, 44.75], [41.53, 44.53], [41.7, 44.13], [42.0, 44.25], [42.53, 44.03], [42.68, 43.68], [43.03, 43.53], [43.25, 43.0], [43.03, 42.47], [42.5, 42.25], [41.97, 42.47], [41.82, 42.82], [41.47, 42.97], [41.3, 43.38], [41.0, 43.25], [40.75, 43.35], [40.5, 43.25], [39.97, 43.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.12759492586946}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.8982646313872324}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.671407270173233, -1.801219230668039, -3.264957693352983, -6.809159720178286, -8.300830534925524, -10.585867206074738]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-2.5302242485699367, -14.57817467702938, -16.12795365286371, -15.487450275441745, -14.109009528030867, -13.246728443711902]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.428531178774653, -6.548090418665331, -7.413568038400687, -7.605567592229105, -7.104925840143665, -6.64171183430669]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.016959472251415, -8.795793136040288, -10.367040411694688, -11.12759492586946, -9.440284025080075, -8.906181062712278]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.66383649078973, -2.0245302723664094, -2.182492192837593, -1.9875478789566687, -1.7171000777709735, -1.5749071199360227]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7890942222691735, -2.6198788855636557, -3.0068251925559326, -2.4989141527945553, -2.2099717871203475, -2.064267599783654]}}